Báo cáo lâm nghiệp: "Polyamines during somatic embryo development in Norway spruce (Picea abies [L ])" potx
![Báo cáo lâm nghiệp: "Polyamines during somatic embryo development in Norway spruce (Picea abies [L.])" potx](https://media.store123doc.com/images/document/2014_08/07/medium_xmd1407381712.jpg)
Báo cáo lâm nghiệp: "Polyamines during somatic embryo development in Norway spruce (Picea abies [L.])" potx
... di-
amine putrescine (Put), triamine spermidine (Spd)
and tetramine spermine (Spm).
ere are a number of reports indicating that PAs
play a crucial role in somatic embryo development
including ... QH82303.
Polyamines during somatic embryo development
in Norway spruce (Picea abies [L. ])
J. M
1
, M. C
2
, P. M
2
, O. M
2
1
Forestry and...
![Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx](https://media.store123doc.com/images/document/2014_08/07/medium_eml1407381692.jpg)
Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx
... P E., R A., P T.
(2005): Regional decline of Norway spruce (Picea abies
[L. ] Karst.) in the Czech Republic. In: Proccedings Obnova
lesních porostů vimisní oblasti východního ... felled by the wind in autumn were
checked for the presence of cambioxylophagous in-
sects in next spring and autumn. Merocoenoses of
cambioxylophagous insects in win...
![Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx](https://media.store123doc.com/images/document/2014_08/07/medium_vax1407381694.jpg)
Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx
... 149
derplantings increases with a decreasing content of
these nutrients in needles. An opposite correlation
was determined for aluminium: with an increasing
proportion of this element in nutrition ... organomineral horizon.
is environment can be simulated during out-
planting by mixing humifi cation and organomin-
eral horizons at a 3:1 volume ratio in a planting
pit 40 × 40 cm...
Báo cáo lâm nghiệp: "Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns" docx
... 9–20% (dominance
of Norway spruce, Picea abies, 30–50%) and in the
Nízký Jeseník Hills (forest coverage 70%, domi-
nance of Norway spruce 67.8%) (C 1996).
e Norway spruce dominates in both ... a.s.l.) in very young spruce forests (10–20-
year-old). All Malaise traps were installed in small
forest clearings, minimally 30 m inwards the forest.
e forest clearings...
Báo cáo lâm nghiệp: " Nutritive stress and cytokinin status in Norway spruce seedlings (Picea abies L. Karst.)" ppsx
... contents in spruce needles. The results of this work are
in accordance with previous cytokinin measurements in declin-
ing spruce trees which also revealed higher levels of cytokinin
ribosides in combination ... artificial
increase of auxin on the root level can induce changes of the
cytokinin content in the shoot.
In discussing the elevated content of cytokinin ribosides in...
Báo cáo khoa học: " Variation of moisture induced movements in Norway spruce (Picea abies)" pps
... presented in [18] on Norway spruce
wood also showed that the longitudinal shrinkage/swell-
ing was largest close to the pith and decreased with in-
creasing distance from the pith. Longitudinal shrinkage
also ... latewood band in one or several growth
rings;
CW-2: Dominating latewood band in one or several
growth rings.
572 C. Bengtsson
Figure 2. a)Measurement of shrinkage and swe...
Báo cáo lâm nghiệp: "Can 13C stable isotope record of Norway spruce tree rings display the effect of environmental conditions" pot
...
13
C has been increasing since the
early 1990s, indicating biological recovery.
DISCUSSION
Variation in the
13
C isotopic signal at the end of the
19
th
century and at the beginning of the 20
th
... fossil belemnite in this case (Vienna-PDB,
VPDB, MC, L 2004).
ere is a discrimination against
13
C in C3 plants
by the carboxylating enzyme Rubisco (~ 27‰) and
during...
Báo cáo lâm nghiệp: "Production and humus form development in forest stands established on agricultural lands – Kostelec nad Černými lesy region" potx
... pine (Pinus sylvestris), Norway spruce (Picea abies) , birch (Betula
verrucosa) and Douglas fir (Pseudotsuga menziesii) in the territory of the Training Forest Enterprise in Kostelec nad
Černými ... performed in
the stands of four tree species on afforested agricul-
tural lands, in a neighbouring forest stand on con-
tinuously forested land (mixed Scots pine – Norway
spru...
Báo cáo lâm nghiệp: "Germination of acorns and development of oak seedlings (Quercus robur L.) following flooding" pot
... the following hypotheses were tested
in this work:
– Seeds begin to germinate only after flooding.
– Germination rate decreases as the duration of
inundation increases.
– Inundation during the ... drift during
Rhine floods (K et al. 2005), seeding before
the start of the flood season in spring can increase
the density of regeneration. On the other hand, the
planting of seedlings...
Báo cáo lâm nghiệp: "Coarse woody debris carbon stocks in natural spruce forests of Babia hora" potx
... content in Norway
spruce wood is 50.1% of the dry mass and remains
stable during the whole decomposition process of
deadwood (B et al. 2007). Basic wood density
of Norway spruce living trees ... including standing
dead trees, lying deadwood, and naturally formed stumps. Basic mensurational information (diameter, height, decay
class) about dead wood was collected in the...